diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index ff14d14..cbefe1f 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -833,6 +833,10 @@
 		return -EBADF;
 	open_file = (struct cifsFileInfo *) file->private_data;
 
+	rc = generic_write_checks(file, poffset, &write_size, 0);
+	if (rc)
+		return rc;
+
 	xid = GetXid();
 
 	if (*poffset > file->f_path.dentry->d_inode->i_size)